博世力士乐比例伺服阀教程
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14th –15th January 2004, Bosch Rexroth in China
4 WRD(E) 5X NG 10, 16, 25, 32, 35Q max 3000 l/min 4/3RV NG 10, 16, 25, 32Q max 3500 l/min
4 WRLE(H) NG 6/10Q max 180 l/min 4 WRA(E) 2X NG 6 / 10Q max 7
5 l/min 4 WRE(E) 2X NG
6 / 10Q max 180 l/min 4 WRZ(E) 7X NG 10, 16, 25, 32, 52Q max 2800 l/min 4 WRK(E) 2X NG 10, 16, 25, 32, 35Q max 3000 l/min Proportional Valves
High Response Control Valves 4 WS(E)2EM 5X NG 10Q N 90 l/min (bei Δpv 70 bar)
4 WSE3EE NG 16, 25, 32Q N 850 l/min (bei Δpv 70 bar)4 WS(E)2EM 2X NG 6Q N 20 l/min (bei Δpv 70 bar)
Servo Valves 4 WRPE NG 10, 16, 25,32Q max 3500 l/min 4/3HRV1 NG 6Q max 24 l/min 4/3WV1 NG 6 /10Q max 120 l/min 4/3WV1 OBE NG 6/ 10Q max 120 l/min 4/3WV1 OBE NG 6 / 10Q max 100l/min HI
HI
HI
HI HI
HI HI HI
14th–15th January 2004, Bosch Rexroth in China
14th–15th January 2004, Bosch Rexroth in China
14th –15th January 2004, Bosch Rexroth in China
开环比例液压系统
)传统的结构形式: 4WRA
4精度较低, 响应较慢
4滞环：≤5% ；灵敏度: ≤0.5% ;
反向域: ≤ 1 %
4相频特性(-900, 50%输入信号):10 ~ 25
Hz
14th –15th January 2004, Bosch Rexroth in China
4WRE …
注意：
不同系列的比例伺服阀的放大器（尤其外置放大器），其电气参数不同！即外置放大器一般不可更换！
不同系列的比例伺服阀的安装尺寸有的相同，有的不同，需进行一下核对！
14th–15th January 2004, Bosch Rexroth in China
14th –15th January 2004, Bosch Rexroth in China
开环比例液压系统
先导式比例方向阀:4WRZ
电比例控制多路阀的仿制品 精度较低, 响应较慢
滞环：≤6% ；
Proportional Directional Valve 4WRZE-7X
Features 4WRZE-7X...
Piloted Proportional Valve with and without O n B oard E lectronics
Pilot pressure controlled by a pressure control valve D3
High reliability and simple operation
At loss of electrical power or cable brake, main spool is positioned in stroke center position
max. allowable contamination level of the fluid is class 9 to NAS 1638, or 18/15 to ISO 4406
14th–15th January 2004, Bosch Rexroth in China
14th–15th January 2004, Bosch Rexroth in China
14th–15th January 2004, Bosch Rexroth in China
14th –15th January 2004, Bosch Rexroth in China
开环比例液压系统
DBETE…
–精度一般, 响应较慢
–Q max =2 l/min.
–滞环：≤±1.5 %
–重复精度: ≤±2 %
–线性度:
最高压力的±3.5 %
–开关时间:
30~150ms
14th –15th January 2004, Bosch Rexroth in China
直控式，带反馈；DBETRE …(PV1-DBV …)
DBETRE…
–精度较高, 响应很快
–Q max =1 l/min.
–滞环：≤0.2 %
–温漂: ≤1 % ，当
ΔT=400C
–开关时间:
10ms （10%）~30ms
（100%）
14th –15th January 2004, Bosch Rexroth in China
先导式，不带反馈；（Z）DBE（E） (6)
（Z ）DBE （E ）…
–精度一般, 响应较快
–Q max =30 l/min.
–滞环：≤ 1.5 %
–重复精度：≤ 2 %
–线性度：±3.5 %
–开关时间:
50ms
（10%）
~80ms （90%）